Treacodactyl
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Loft insulationI need to clean out the old insulation in a loft and insulate it from scratch.
Firstly, I don't suppose anyone is aware of any deals at the moment? You used to be able to pick up loft insulation for a £1 a roll but those deals are long gone. Not being on benefits and having some insulation seems to rule me out of anything I can find.
Secondly, is there anything special I should be looking for? The cheapest options seem to be the recycled glass or plain glass mineral wool.
Prices seem to be £20 for around 5.5 SQM @ 20 cm thick.
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dpack
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rock wool is much nicer to work with than anything glass based
be aware of wires and lights etc ,try not to make them overheat ,a gap above a fitting and lifting wires above the insulation helps.if the electrics are a bit old and manky get a spark to sort that first.
when disposing of the old stuff full ppe (including fiber proof clothes)
last one i did i used 20 cm between the joists and then 20cm across giving a deep blanket but it made it very noticeably warmer
the materials are quite cheap and pay for themselves in a year or two
make a point of dealing with any drips ,holes in the roof etc as part of the job .
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dpack
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ps if there is any plumbing dont insulate under it ,insulate it or over it
expanded polystyrene board is ideal for tanks and the foam tube stuff will do pipes.lots of folk have insulated lofts and frozen their pipes first cold snap
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Treacodactyl
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I've insulated a few lofts, so know what I'm doing. As for the material I also thought mineral wool was better than glass fibre but the stuff nowadays is called "glass mineral wool".
It'll take me longer to recoup money on it, it's looking like costing £800+ and next year I should be heating with just my own wood.
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sean
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I take it you've checked eligibility for British Gas's scheme.
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Treacodactyl
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Yes, thanks, part of the house is newer and insulated so I'll not qualify. I also don't want cavity wall insulation and I'm not sure you can get one without the other.
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sean
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I thought you probably had. It seemed more open than others though so I thought it might be useful for anyone else looking at the thread.
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Treacodactyl
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Yes, there's more details on the MSE site: http://www.moneysavingexpert.com/utilities/free-cavity-loft-insulation
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Mistress Rose
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There is a possibility that you may be able to get some grant through your county council. Ours were offering it a little while ago, and I don't think you had to be on benefits to get it.
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Treacodactyl
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Nothing on offer at our local council that I can get, well unless I'm willing to wait at least 9 months...
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onemanband
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I don't know of any deals, but would recommend CCF for bulk purchase.
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Slim
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air-seal first!
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GrahamH
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Do not air seal if using laid lagging. By putting insulation on to the top of the ceilings means your loft will become less warm so ensure you lag any pipework and tankage within the roof space. Some do not fit the lagging below such items to allow the rising heat to warm these items. If choosing this method, lagging is placed over the top.
Sealed will cause problems with wood rot, you need a controlled air flow, not a gale.
If you are applying insulation to the underneath of the roof covering one can then air seal the roof space; air should circulate from the rooms below.
Soffits are sometimes fitted with the vents to allow the required air flow to insulated roof spaces.
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Slim
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Do not air seal if using laid lagging. By putting insulation on to the top of the ceilings means your loft will become less warm so ensure you lag any pipework and tankage within the roof space. Some do not fit the lagging below such items to allow the rising heat to warm these items. If choosing this method, lagging is placed over the top.
Sealed will cause problems with wood rot, you need a controlled air flow, not a gale.
If you are applying insulation to the underneath of the roof covering one can then air seal the roof space; air should circulate from the rooms below.
Soffits are sometimes fitted with the vents to allow the required air flow to insulated roof spaces. |